bob orr has our report. >> reporter: the seven-minute video released by the taliban purports to show the final stages of planning for the brazen attack. insurgents wearing what appear to be u.s. military uniforms are shown cutting through a chain link fence, a tactic used in the assault. another scene shows enemy fighters in an operational planning session. one of the commanders uses a whiteboard and crude sketches to describe the location of aircraft and fortification on the british run air base. in great detail, the leader describes how the attackers will split into three teams, each with specific target assignments. and the tape contains messages, last wills of some of the fighters who clearly didn't expect to survive the assault. this man, speaking in english, accuses the united states of attacking islam. >> you came to afghanistan to commit cruelty on muslims. in the name of terrorism. it is not terrorism. we are not terrorists. >> reporter: the september 14th nighttime raid was the most destructive enemy attack in the decade-long afghanistan war. 15 insurgents armed with automa